A bstract We calculate the thermal correction to entanglement spectrum for separating a single interval of two dimensional conformal field theories. Our derivation is direct extension Rényi entropy. Within low-temperature expansion by including only first excited state in density matrix, we approach analytical results at both small and large limit. find temperature reduces eigenvalues while inc...

In certain special circumstances, such as in the vicinity of a black hole or uniformly accelerating frame, vacuum fluctuations appear to give rise finite-temperature environment. This effect, currently without experimental confirmation, can be interpreted manifestation quantum entanglement after tracing out modes an unobserved region. this work, we identify class experimentally accessible syste...

Physical interactions in quantum many-body systems are typically local: Individual constituents interact mainly with their few nearest neighbors. This locality of interactions is inherited by a decay of correlation functions, but also reflected by scaling laws of a quite profound quantity: The entanglement entropy of ground states. This entropy of the reduced state of a subregion often merely g...